Sometimes the intermediate steering shafts will start to slip on these Cars. It is made in 2 pieces so that it will collpase upon impact. Look at the red in this pic. That is where the 2 pieces are pressed together with a rubber in between. If its slipping, you will see it there or at "D".
What you can do is get some bushings that will fit in the hole at "D". take the shaft off and press them in on both sides. Hope this helps.